Barnes is a city in Washington County, Kansas, United States. As of the 2010 census, the city population was 159.HistoryBarnes was originally called Elm Grove when it was founded in 1870. It was renamed Barnes in 1876 in honor of A. S. Barnes, a major stockholder.Barnes was a station and shipping point on the Missouri Pacific Railroad.GeographyBarnes is located at . According to the United States Census Bureau, the city has a total area of 0.18sqmi, of which, 0.17sqmi is land and 0.01sqmi is water.Demographics2010 censusAs of the census of 2010, there were 159 people, 71 households, and 45 families residing in the city. The population density was 935.3PD/sqmi. There were 89 housing units at an average density of 523.5/sqmi. The racial makeup of the city was 95.0% White, 1.3% Native American, and 3.8% from other races. Hispanic or Latino of any race were 5.0% of the population.There were 71 households of which 22.5% had children under the age of 18 living with them, 46.5% were married couples living together, 11.3% had a female householder with no husband present, 5.6% had a male householder with no wife present, and 36.6% were non-families. 35.2% of all households were made up of individuals and 14.1% had someone living alone who was 65 years of age or older. The average household size was 2.24 and the average family size was 2.82.